Change google/apiclient-services requirement from ^0.200.0 to ~0.200

[ThibaultVlacich]

Fixes #2092

From the Composer documentation:

The ^ operator behaves very similarly, but it sticks closer to semantic versioning, and will always allow non-breaking updates. For example ^1.2.3 is equivalent to >=1.2.3 <2.0.0 as none of the releases until 2.0 should break backwards compatibility. For pre-1.0 versions it also acts with safety in mind and treats ^0.3 as >=0.3.0 <0.4.0.

The important part being the last sentence.